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gsm_bs.cpp
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gsm_bs.cpp
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/*****************************************************************************\
** **
** LCR **
** **
**---------------------------------------------------------------------------**
** Copyright: Andreas Eversberg **
** **
** mISDN gsm (BS mode) **
** **
\*****************************************************************************/
#include "main.h"
#include "mncc.h"
struct lcr_gsm *gsm_bs = NULL;
#define PAYLOAD_TYPE_GSM 3
#define PAYLOAD_TYPE_GSM_HALF 96
#define PAYLOAD_TYPE_GSM_EFR 97
#define PAYLOAD_TYPE_AMR 98
/*
* DTMF stuff
*/
unsigned char dtmf_samples[16][8000];
static int dtmf_x[4] = { 1209, 1336, 1477, 1633 };
static int dtmf_y[4] = { 697, 770, 852, 941 };
void generate_dtmf(void)
{
double fx, fy, sample;
int i, x, y;
unsigned char *law;
for (y = 0; y < 4; y++) {
fy = 2 * 3.1415927 * ((double)dtmf_y[y]) / 8000.0;
for (x = 0; x < 4; x++) {
fx = 2 * 3.1415927 * ((double)dtmf_x[x]) / 8000.0;
law = dtmf_samples[y << 2 | x];
for (i = 0; i < 8000; i++) {
sample = sin(fy * ((double)i)) * 0.251 * 32767.0; /* -6 dB */
sample += sin(fx * ((double)i)) * 0.158 * 32767.0; /* -8 dB */
*law++ = audio_s16_to_law[(int)sample & 0xffff];
}
}
}
}
/*
* constructor
*/
Pgsm_bs::Pgsm_bs(int type, char *portname, struct port_settings *settings, struct interface *interface) : Pgsm(type, portname, settings, interface)
{
p_g_lcr_gsm = gsm_bs;
p_g_dtmf = NULL;
p_g_dtmf_index = 0;
PDEBUG(DEBUG_GSM, "Created new GSMBSPort(%s).\n", portname);
}
/*
* destructor
*/
Pgsm_bs::~Pgsm_bs()
{
PDEBUG(DEBUG_GSM, "Destroyed GSM BS process(%s).\n", p_name);
}
static const char *media_type2name(unsigned char media_type) {
switch (media_type) {
case MEDIA_TYPE_ULAW:
return "PCMU";
case MEDIA_TYPE_ALAW:
return "PCMA";
case MEDIA_TYPE_GSM:
return "GSM";
case MEDIA_TYPE_GSM_HR:
return "GSM-HR";
case MEDIA_TYPE_GSM_EFR:
return "GSM-EFR";
case MEDIA_TYPE_AMR:
return "AMR";
}
return "UKN";
}
/* PROCEEDING INDICATION (from MS) */
void Pgsm_bs::call_conf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
int media_types[8];
unsigned char payload_types[8];
int payloads = 0;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
if (mncc->fields & MNCC_F_CAUSE) {
add_trace("cause", "coding", "%d", mncc->cause.coding);
add_trace("cause", "location", "%", mncc->cause.location);
add_trace("cause", "value", "%", mncc->cause.value);
}
end_trace();
new_state(PORT_STATE_OUT_PROCEEDING);
/* get list of offered payload types
* if list ist empty, the FR V1 is selected */
select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
/* if no given payload type is supported, we select from channel type */
if (!payloads) {
switch (mncc->lchan_type) {
case GSM_LCHAN_TCH_F:
media_types[0] = MEDIA_TYPE_GSM;
payload_types[0] = PAYLOAD_TYPE_GSM;
payloads = 1;
break;
case GSM_LCHAN_TCH_H:
media_types[0] = MEDIA_TYPE_GSM_HR;
payload_types[0] = 96; /* dynamic */
payloads = 1;
break;
default:
mncc = create_mncc(MNCC_REL_REQ, callref);
gsm_trace_header(p_interface_name, this, MNCC_REL_REQ, DIRECTION_OUT);
mncc->fields |= MNCC_F_CAUSE;
mncc->cause.coding = 3;
mncc->cause.location = 1;
mncc->cause.value = 65;
add_trace("cause", "coding", "%d", mncc->cause.coding);
add_trace("cause", "location", "%d", mncc->cause.location);
add_trace("cause", "value", "%d", mncc->cause.value);
add_trace("reason", NULL, "Given lchan not supported");
end_trace();
send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
}
/* select first payload type that matches the rtp list */
if (p_g_rtp_bridge) {
int i, j;
for (i = 0; i < p_g_rtp_payloads; i++) {
for (j = 0; j < payloads; j++) {
if (p_g_rtp_media_types[i] == media_types[j])
break;
}
if (j < payloads)
break;
}
if (i == p_g_rtp_payloads) {
struct lcr_msg *message;
/* payload offered by remote RTP is not supported */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = 65;
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
/* send release */
mncc = create_mncc(MNCC_REL_REQ, p_g_callref);
gsm_trace_header(p_interface_name, this, MNCC_REL_REQ, DIRECTION_OUT);
mncc->fields |= MNCC_F_CAUSE;
mncc->cause.coding = 3;
mncc->cause.location = LOCATION_PRIVATE_LOCAL;
mncc->cause.value = 65;
add_trace("cause", "coding", "%d", mncc->cause.coding);
add_trace("cause", "location", "%d", mncc->cause.location);
add_trace("cause", "value", "%d", mncc->cause.value);
add_trace("reason", NULL, "None of the payload types are supported by MS");
end_trace();
send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
modify_lchan(p_g_rtp_media_types[i]);
/* use the payload type from received rtp list, not from locally generated payload types */
p_g_payload_type = p_g_rtp_payload_types[i];
} else {
/* modify to first given payload */
modify_lchan(media_types[0]);
p_g_payload_type = payload_types[0];
}
}
/* DTMF INDICATION */
void Pgsm_bs::start_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
struct gsm_mncc *resp;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
add_trace("keypad", NULL, "%c", mncc->keypad);
end_trace();
SPRINT(p_dialinginfo.id, "%c", mncc->keypad);
p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
/* send resp */
gsm_trace_header(p_interface_name, this, MNCC_START_DTMF_RSP, DIRECTION_OUT);
add_trace("keypad", NULL, "%c", mncc->keypad);
end_trace();
resp = create_mncc(MNCC_START_DTMF_RSP, p_g_callref);
resp->fields |= MNCC_F_KEYPAD;
resp->keypad = mncc->keypad;
send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
if (p_g_rtp_bridge) {
/* if two members are bridged */
if (p_bridge && p_bridge->first && p_bridge->first->next && !p_bridge->first->next->next) {
class Port *remote = NULL;
/* select other member */
if (p_bridge->first->port == this)
remote = p_bridge->first->next->port;
if (p_bridge->first->next->port == this)
remote = p_bridge->first->port;
if (remote) {
struct lcr_msg *message;
/* send dtmf information, because we bridge RTP directly */
message = message_create(0, remote->p_serial, EPOINT_TO_PORT, MESSAGE_DTMF);
message->param.dtmf = mncc->keypad;
message_put(message);
}
}
} else {
/* generate DTMF tones, since we do audio forwarding inside LCR */
switch (mncc->keypad) {
case '1': p_g_dtmf = dtmf_samples[0]; break;
case '2': p_g_dtmf = dtmf_samples[1]; break;
case '3': p_g_dtmf = dtmf_samples[2]; break;
case 'a':
case 'A': p_g_dtmf = dtmf_samples[3]; break;
case '4': p_g_dtmf = dtmf_samples[4]; break;
case '5': p_g_dtmf = dtmf_samples[5]; break;
case '6': p_g_dtmf = dtmf_samples[6]; break;
case 'b':
case 'B': p_g_dtmf = dtmf_samples[7]; break;
case '7': p_g_dtmf = dtmf_samples[8]; break;
case '8': p_g_dtmf = dtmf_samples[9]; break;
case '9': p_g_dtmf = dtmf_samples[10]; break;
case 'c':
case 'C': p_g_dtmf = dtmf_samples[11]; break;
case '*': p_g_dtmf = dtmf_samples[12]; break;
case '0': p_g_dtmf = dtmf_samples[13]; break;
case '#': p_g_dtmf = dtmf_samples[14]; break;
case 'd':
case 'D': p_g_dtmf = dtmf_samples[15]; break;
}
p_g_dtmf_index = 0;
}
}
void Pgsm_bs::stop_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
struct gsm_mncc *resp;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
add_trace("keypad", NULL, "%c", mncc->keypad);
end_trace();
/* send resp */
gsm_trace_header(p_interface_name, this, MNCC_STOP_DTMF_RSP, DIRECTION_OUT);
add_trace("keypad", NULL, "%c", mncc->keypad);
end_trace();
resp = create_mncc(MNCC_STOP_DTMF_RSP, p_g_callref);
resp->keypad = mncc->keypad;
send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
/* stop DTMF */
p_g_dtmf = NULL;
}
void Pgsm_bs::rtp_modify(unsigned int msg_type, unsigned int callref, struct gsm_mncc_rtp *mncc)
{
struct lcr_msg *message;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
end_trace();
if (p_g_tch_connected) {
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RTP_MODIFY);
message->param.rtpinfo.payloads = 1;
message->param.rtpinfo.payload_types[0] = p_g_payload_type;
message->param.rtpinfo.media_types[0] = p_g_media_type;
message->param.rtpinfo.ip = mncc->ip;
message->param.rtpinfo.port = mncc->port;
message_put(message);
}
}
/* HOLD INDICATION */
void Pgsm_bs::hold_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
struct lcr_msg *message;
struct gsm_mncc *resp, *frame;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
end_trace();
/* notify the hold of call */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY);
message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD;
message->param.notifyinfo.local = 1; /* call is held by supplementary service */
message->param.notifyinfo.media_type = p_g_media_type; /* current media type or 0 if not set */
message->param.notifyinfo.payload_type = p_g_payload_type; /* current payload type */
message_put(message);
/* acknowledge hold */
gsm_trace_header(p_interface_name, this, MNCC_HOLD_CNF, DIRECTION_OUT);
end_trace();
resp = create_mncc(MNCC_HOLD_CNF, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
/* disable audio */
if (p_g_tch_connected) { /* it should be true */
gsm_trace_header(p_interface_name, this, MNCC_FRAME_DROP, DIRECTION_OUT);
end_trace();
frame = create_mncc(MNCC_FRAME_DROP, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
p_g_tch_connected = 0;
}
}
/* RETRIEVE INDICATION */
void Pgsm_bs::retr_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
struct lcr_msg *message;
struct gsm_mncc *resp, *frame;
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
end_trace();
/* notify the retrieve of call */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY);
message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
message->param.notifyinfo.local = 1; /* call is retrieved by supplementary service */
message->param.notifyinfo.media_type = p_g_media_type; /* current media type or 0 if not set */
message->param.notifyinfo.payload_type = p_g_payload_type; /* current payload type */
message_put(message);
/* acknowledge retr */
gsm_trace_header(p_interface_name, this, MNCC_RETRIEVE_CNF, DIRECTION_OUT);
end_trace();
resp = create_mncc(MNCC_RETRIEVE_CNF, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
/* enable audio */
if (!p_g_tch_connected) { /* it should be true */
gsm_trace_header(p_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
end_trace();
frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
p_g_tch_connected = 1;
/* connect RTP */
send_mncc_rtp_connect();
}
}
/*
* select payload type by given list or GSM V1 FR
* return the payload type or 0 if not given
*/
void Pgsm_bs::select_payload_type(struct gsm_mncc *mncc, unsigned char *payload_types, int *media_types, int *payloads, int max_payloads)
{
int media_type;
unsigned char payload_type;
int half;
void *encoder, *decoder;
*payloads = 0;
gsm_trace_header(p_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
if ((mncc->fields & MNCC_F_BEARER_CAP)) {
/* select preferred payload type from list */
int i;
add_trace("bearer", "capa", "given by MS");
for (i = 0; mncc->bearer_cap.speech_ver[i] >= 0; i++) {
half = 0;
/* select payload type we support */
switch (mncc->bearer_cap.speech_ver[i]) {
case 0:
add_trace("speech", "version", "Full Rate given");
media_type = MEDIA_TYPE_GSM;
payload_type = PAYLOAD_TYPE_GSM;
encoder = p_g_fr_encoder;
decoder = p_g_fr_decoder;
break;
case 2:
add_trace("speech", "version", "EFR given");
media_type = MEDIA_TYPE_GSM_EFR;
payload_type = PAYLOAD_TYPE_GSM_EFR;
encoder = p_g_amr_encoder;
decoder = p_g_amr_decoder;
break;
case 4:
add_trace("speech", "version", "AMR given");
media_type = MEDIA_TYPE_AMR;
payload_type = PAYLOAD_TYPE_AMR;
encoder = p_g_amr_encoder;
decoder = p_g_amr_decoder;
break;
case 1:
add_trace("speech", "version", "Half Rate given");
media_type = MEDIA_TYPE_GSM_HR;
payload_type = PAYLOAD_TYPE_GSM_HALF;
encoder = p_g_hr_encoder;
decoder = p_g_hr_decoder;
half = 1;
break;
case 5:
add_trace("speech", "version", "AMR Half Rate given");
media_type = MEDIA_TYPE_AMR;
payload_type = PAYLOAD_TYPE_AMR;
encoder = p_g_amr_encoder;
decoder = p_g_amr_decoder;
half = 1;
break;
default:
add_trace("speech", "version", "%d given", mncc->bearer_cap.speech_ver[i]);
media_type = 0;
payload_type = 0;
}
/* wen don't support it, so we check the next */
if (!media_type) {
add_trace("speech", "ignored", "Not supported by LCR");
continue;
}
if (!half && mncc->lchan_type != GSM_LCHAN_TCH_F) {
add_trace("speech", "ignored", "Not TCH/F");
continue;
}
if (half && mncc->lchan_type != GSM_LCHAN_TCH_H) {
add_trace("speech", "ignored", "Not TCH/H");
continue;
}
if (!p_g_rtp_bridge) {
if (!encoder || !decoder) {
add_trace("speech", "ignored", "Codec not supported");
continue;
}
}
if (*payloads <= max_payloads) {
media_types[*payloads] = media_type;
payload_types[*payloads] = payload_type;
(*payloads)++;
}
}
} else {
add_trace("bearer", "capa", "not given by MS");
add_trace("speech", "version", "Full Rate given");
media_types[0] = MEDIA_TYPE_GSM;
payload_types[0] = PAYLOAD_TYPE_GSM;
*payloads = 1;
}
if (!(*payloads))
add_trace("error", "", "All given payload types unsupported");
end_trace();
}
/*
* handles all indications
*/
/* SETUP INDICATION */
void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
{
class Endpoint *epoint;
struct lcr_msg *message;
struct gsm_mncc *proceeding, *frame;
struct interface *interface;
int media_types[8];
unsigned char payload_types[8];
int payloads = 0;
interface = getinterfacebyname(p_interface_name);
if (!interface) {
PERROR("Cannot find interface %s.\n", p_interface_name);
return;
}
/* process given callref */
gsm_trace_header(p_interface_name, this, 0, DIRECTION_IN);
add_trace("callref", "new", "0x%x", callref);
if (p_g_callref) {
/* release in case the ID is already in use */
add_trace("error", NULL, "callref already in use");
end_trace();
mncc = create_mncc(MNCC_REJ_REQ, callref);
gsm_trace_header(p_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
mncc->fields |= MNCC_F_CAUSE;
mncc->cause.coding = 3;
mncc->cause.location = 1;
mncc->cause.value = 47;
add_trace("cause", "coding", "%d", mncc->cause.coding);
add_trace("cause", "location", "%d", mncc->cause.location);
add_trace("cause", "value", "%d", mncc->cause.value);
add_trace("reason", NULL, "callref already in use");
end_trace();
send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
p_g_callref = callref;
end_trace();
/* caller info */
if (mncc->clir.inv)
p_callerinfo.present = INFO_PRESENT_RESTRICTED;
else
p_callerinfo.present = INFO_PRESENT_ALLOWED;
if (mncc->calling.number[0])
SCPY(p_callerinfo.id, mncc->calling.number);
else
p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
SCPY(p_callerinfo.imsi, mncc->imsi);
p_callerinfo.screen = INFO_SCREEN_NETWORK;
p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
SCPY(p_callerinfo.interface, p_interface_name);
/* dialing information */
SCAT(p_dialinginfo.id, mncc->called.number);
switch (mncc->called.type) {
case 0x1:
p_dialinginfo.ntype = INFO_NTYPE_INTERNATIONAL;
break;
case 0x2:
p_dialinginfo.ntype = INFO_NTYPE_NATIONAL;
break;
case 0x4:
p_dialinginfo.ntype = INFO_NTYPE_SUBSCRIBER;
break;
default:
p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
break;
}
if (mncc->emergency) {
SCPY(p_dialinginfo.id, "emergency");
}
p_dialinginfo.sending_complete = 1;
/* bearer capability */
p_capainfo.bearer_capa = INFO_BC_SPEECH;
p_capainfo.bearer_info1 = (options.law=='a')?3:2;
p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
p_capainfo.source_mode = B_MODE_TRANSPARENT;
p_g_mode = p_capainfo.source_mode;
/* get list of offered payload types
* if list ist empty, the FR V1 is selected */
select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
/* if no given payload type is supported, we select from channel type */
if (!payloads) {
switch (mncc->lchan_type) {
case GSM_LCHAN_TCH_F:
media_types[0] = MEDIA_TYPE_GSM;
payload_types[0] = PAYLOAD_TYPE_GSM;
payloads = 1;
break;
case GSM_LCHAN_TCH_H:
media_types[0] = MEDIA_TYPE_GSM_HR;
payload_types[0] = 96; /* dynamic */
payloads = 1;
break;
default:
mncc = create_mncc(MNCC_REJ_REQ, callref);
gsm_trace_header(p_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
mncc->fields |= MNCC_F_CAUSE;
mncc->cause.coding = 3;
mncc->cause.location = 1;
mncc->cause.value = 65;
add_trace("cause", "coding", "%d", mncc->cause.coding);
add_trace("cause", "location", "%d", mncc->cause.location);
add_trace("cause", "value", "%d", mncc->cause.value);
add_trace("reason", NULL, "Given lchan not supported");
end_trace();
send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
}
#if 0
/* if no given payload type is supported, we reject the call */
if (!payloads) {
}
#endif
/* useruser */
/* what infos did we got ... */
gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
if (p_callerinfo.id[0])
add_trace("calling", "number", "%s", p_callerinfo.id);
else
SPRINT(p_callerinfo.id, "imsi-%s", p_callerinfo.imsi);
add_trace("calling", "imsi", "%s", p_callerinfo.imsi);
add_trace("dialing", "number", "%s", p_dialinginfo.id);
end_trace();
/* create endpoint */
if (p_epointlist)
FATAL("Incoming call but already got an endpoint.\n");
if (!(epoint = new Endpoint(p_serial, 0)))
FATAL("No memory for Endpoint instance\n");
epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
epointlist_new(epoint->ep_serial);
/* modify lchan in case of no rtp bridge */
if (!p_g_rtp_bridge)
modify_lchan(media_types[0]);
/* send call proceeding */
gsm_trace_header(p_interface_name, this, MNCC_CALL_PROC_REQ, DIRECTION_OUT);
proceeding = create_mncc(MNCC_CALL_PROC_REQ, p_g_callref);
if (p_g_tones) {
proceeding->fields |= MNCC_F_PROGRESS;
proceeding->progress.coding = 3; /* GSM */
proceeding->progress.location = 1;
proceeding->progress.descr = 8;
add_trace("progress", "coding", "%d", proceeding->progress.coding);
add_trace("progress", "location", "%d", proceeding->progress.location);
add_trace("progress", "descr", "%d", proceeding->progress.descr);
}
end_trace();
send_and_free_mncc(p_g_lcr_gsm, proceeding->msg_type, proceeding);
new_state(PORT_STATE_IN_PROCEEDING);
if (p_g_tones && !p_g_tch_connected) { /* only if ... */
gsm_trace_header(p_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
end_trace();
frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
p_g_tch_connected = 1;
}
/* send setup message to endpoit */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
message->param.setup.port_type = p_type;
// message->param.setup.dtmf = 0;
memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info));
memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info));
SCPY((char *)message->param.setup.useruser.data, (char *)mncc->useruser.info);
message->param.setup.useruser.len = strlen(mncc->useruser.info);
message->param.setup.useruser.protocol = mncc->useruser.proto;
if (p_g_rtp_bridge) {
struct gsm_mncc_rtp *rtp;
int i;
PDEBUG(DEBUG_GSM, "Request RTP peer info, before forwarding setup\n");
p_g_setup_pending = message;
rtp = (struct gsm_mncc_rtp *) create_mncc(MNCC_RTP_CREATE, p_g_callref);
send_and_free_mncc(p_g_lcr_gsm, rtp->msg_type, rtp);
for (i = 0; i < (int)sizeof(message->param.setup.rtpinfo.payload_types) && i < payloads; i++) {
message->param.setup.rtpinfo.media_types[i] = media_types[i];
message->param.setup.rtpinfo.payload_types[i] = payload_types[i];
message->param.setup.rtpinfo.payloads++;
}
} else
message_put(message);
}
/*
* BSC sends message to port
*/
int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
{
struct gsm_mncc *mncc = (struct gsm_mncc *)arg;
unsigned int callref = mncc->callref;
class Port *port;
class Pgsm_bs *pgsm_bs = NULL;
char name[64];
// struct mISDNport *mISDNport;
/* Special messages */
switch(msg_type) {
}
/* find callref */
callref = mncc->callref;
port = port_first;
while(port) {
if ((port->p_type & PORT_CLASS_GSM_MASK) == PORT_CLASS_GSM_BS) {
pgsm_bs = (class Pgsm_bs *)port;
if (pgsm_bs->p_g_callref == callref) {
break;
}
}
port = port->next;
}
if (msg_type == MNCC_RTP_MODIFY) {
pgsm_bs->rtp_modify(msg_type, callref, (struct gsm_mncc_rtp *)arg);
}
if (msg_type == GSM_TCHF_FRAME
|| msg_type == GSM_TCHF_FRAME_EFR
|| msg_type == GSM_TCHH_FRAME
|| msg_type == GSM_TCH_FRAME_AMR
|| msg_type == GSM_BAD_FRAME) {
if (port) {
/* inject DTMF, if enabled */
if (pgsm_bs->p_g_dtmf) {
unsigned char data[160];
int i;
for (i = 0; i < 160; i++) {
data[i] = pgsm_bs->p_g_dtmf[pgsm_bs->p_g_dtmf_index++];
if (pgsm_bs->p_g_dtmf_index == 8000)
pgsm_bs->p_g_dtmf_index = 0;
}
/* send */
pgsm_bs->bridge_tx(data, 160);
} else
pgsm_bs->frame_receive(arg);
/* if we do not bridge we need to inject audio, if available */
if (!pgsm_bs->p_bridge || pgsm_bs->p_tone_name[0]) {
unsigned char data[160];
int i;
i = pgsm_bs->read_audio(data, 160);
if (i)
pgsm_bs->audio_send(data, i);
}
}
return 0;
}
if (!port) {
struct interface *interface;
if (msg_type != MNCC_SETUP_IND)
return(0);
interface = getinterfacebyname(lcr_gsm->interface_name);
if (!interface) {
struct gsm_mncc *rej;
rej = create_mncc(MNCC_REJ_REQ, callref);
rej->fields |= MNCC_F_CAUSE;
rej->cause.coding = 3;
rej->cause.location = 1;
rej->cause.value = 27;
gsm_trace_header(NULL, NULL, MNCC_REJ_REQ, DIRECTION_OUT);
add_trace("cause", "coding", "%d", rej->cause.coding);
add_trace("cause", "location", "%d", rej->cause.location);
add_trace("cause", "value", "%d", rej->cause.value);
add_trace("reason", NULL, "interface %s not found", lcr_gsm->interface_name);
end_trace();
send_and_free_mncc(lcr_gsm, rej->msg_type, rej);
return 0;
}
/* creating port object, transparent until setup with hdlc */
SPRINT(name, "%s-%d-in", interface->name, 0);
if (!(pgsm_bs = new Pgsm_bs(PORT_TYPE_GSM_BS_IN, name, NULL, interface)))
FATAL("Cannot create Port instance.\n");
}
switch(msg_type) {
case MNCC_SETUP_IND:
pgsm_bs->setup_ind(msg_type, callref, mncc);
break;
case MNCC_RTP_CREATE:
pgsm_bs->rtp_create_ind(msg_type, callref, mncc);
break;
case MNCC_RTP_CONNECT:
pgsm_bs->rtp_connect_ind(msg_type, callref, mncc);
break;
case MNCC_START_DTMF_IND:
pgsm_bs->start_dtmf_ind(msg_type, callref, mncc);
break;
case MNCC_STOP_DTMF_IND:
pgsm_bs->stop_dtmf_ind(msg_type, callref, mncc);
break;
case MNCC_CALL_CONF_IND:
pgsm_bs->call_conf_ind(msg_type, callref, mncc);
break;
case MNCC_ALERT_IND:
pgsm_bs->alert_ind(msg_type, callref, mncc);
break;
case MNCC_SETUP_CNF:
pgsm_bs->setup_cnf(msg_type, callref, mncc);
break;
case MNCC_SETUP_COMPL_IND:
pgsm_bs->setup_compl_ind(msg_type, callref, mncc);
break;
case MNCC_DISC_IND:
pgsm_bs->disc_ind(msg_type, callref, mncc);
break;
case MNCC_REL_IND:
case MNCC_REL_CNF:
case MNCC_REJ_IND:
pgsm_bs->rel_ind(msg_type, callref, mncc);
break;
case MNCC_NOTIFY_IND:
pgsm_bs->notify_ind(msg_type, callref, mncc);
break;
case MNCC_HOLD_IND:
pgsm_bs->hold_ind(msg_type, callref, mncc);
break;
case MNCC_RETRIEVE_IND:
pgsm_bs->retr_ind(msg_type, callref, mncc);
break;
default:
PDEBUG(DEBUG_GSM, "Pgsm_bs(%s) gsm port with (caller id %s) received unhandled nessage: 0x%x\n", pgsm_bs->p_name, pgsm_bs->p_callerinfo.id, msg_type);
}
return(0);
}
/* MESSAGE_SETUP */
void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
{
struct lcr_msg *message;
struct epoint_list *epointlist;
struct gsm_mncc *mncc;
struct interface *interface;
interface = getinterfacebyname(p_interface_name);
if (!interface) {
PERROR("Cannot find interface %s.\n", p_interface_name);
return;
}
/* copy setup infos to port */
memcpy(&p_callerinfo, ¶m->setup.callerinfo, sizeof(p_callerinfo));
memcpy(&p_dialinginfo, ¶m->setup.dialinginfo, sizeof(p_dialinginfo));
memcpy(&p_capainfo, ¶m->setup.capainfo, sizeof(p_capainfo));
memcpy(&p_redirinfo, ¶m->setup.redirinfo, sizeof(p_redirinfo));
/* no GSM MNCC connection */
if (p_g_lcr_gsm->mncc_lfd.fd < 0) {
gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
add_trace("failure", NULL, "No MNCC connection.");
end_trace();
message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = 41; // temp. failure.
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
/* no number */
if (!p_dialinginfo.id[0]) {
gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
add_trace("failure", NULL, "No dialed subscriber given.");
end_trace();
message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = 28;
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
/* unsupported codec for RTP bridge */
if (param->setup.rtpinfo.port) {
int i;
p_g_rtp_payloads = 0;
gsm_trace_header(p_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
for (i = 0; i < param->setup.rtpinfo.payloads; i++) {
switch (param->setup.rtpinfo.media_types[i]) {
case MEDIA_TYPE_GSM:
case MEDIA_TYPE_GSM_EFR:
case MEDIA_TYPE_AMR:
case MEDIA_TYPE_GSM_HR:
add_trace("rtp", "payload", "%s:%d supported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
if (p_g_rtp_payloads < (int)sizeof(p_g_rtp_payload_types)) {
p_g_rtp_media_types[p_g_rtp_payloads] = param->setup.rtpinfo.media_types[i];
p_g_rtp_payload_types[p_g_rtp_payloads] = param->setup.rtpinfo.payload_types[i];
p_g_rtp_payloads++;
}
break;
default:
add_trace("rtp", "payload", "%s:%d unsupported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
}
}
end_trace();
if (!p_g_rtp_payloads) {
gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
add_trace("failure", NULL, "No payload given that is supported by GSM");
end_trace();
message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = 65;
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_g_delete);
return;
}
}
// SCPY(&p_m_tones_dir, param->setup.ext.tones_dir);
/* screen outgoing caller id */
do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_interface_name);
/* attach only if not already */
epointlist = p_epointlist;
while(epointlist) {
if (epointlist->epoint_id == epoint_id)
break;
epointlist = epointlist->next;
}
if (!epointlist)
epointlist_new(epoint_id);
/* creating l3id */
gsm_trace_header(p_interface_name, this, 0, DIRECTION_OUT);
p_g_callref = new_callref++;
add_trace("callref", "new", "0x%x", p_g_callref);
end_trace();
gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
mncc = create_mncc(MNCC_SETUP_REQ, p_g_callref);
/* caller information */
mncc->fields |= MNCC_F_CALLING;
mncc->calling.plan = 1;
switch (p_callerinfo.ntype) {
case INFO_NTYPE_UNKNOWN:
mncc->calling.type = 0x0;
break;
case INFO_NTYPE_INTERNATIONAL:
mncc->calling.type = 0x1;
break;
case INFO_NTYPE_NATIONAL:
mncc->calling.type = 0x2;
break;
case INFO_NTYPE_SUBSCRIBER:
mncc->calling.type = 0x4;
break;
default: /* INFO_NTYPE_NOTPRESENT */
mncc->fields &= ~MNCC_F_CALLING;
break;
}
switch (p_callerinfo.screen) {
case INFO_SCREEN_USER:
mncc->calling.screen = 0;
break;
default: /* INFO_SCREEN_NETWORK */
mncc->calling.screen = 3;
break;
}
switch (p_callerinfo.present) {
case INFO_PRESENT_ALLOWED:
mncc->calling.present = 0;
break;
case INFO_PRESENT_RESTRICTED:
mncc->calling.present = 1;
break;
default: /* INFO_PRESENT_NOTAVAIL */
mncc->calling.present = 2;
break;
}
if (mncc->fields & MNCC_F_CALLING) {
SCPY(mncc->calling.number, p_callerinfo.id);
add_trace("calling", "type", "%d", mncc->calling.type);
add_trace("calling", "plan", "%d", mncc->calling.plan);
add_trace("calling", "present", "%d", mncc->calling.present);
add_trace("calling", "screen", "%d", mncc->calling.screen);
add_trace("calling", "number", "%s", mncc->calling.number);
}
/* dialing information */
mncc->fields |= MNCC_F_CALLED;
if (!strncmp(p_dialinginfo.id, "imsi-", 5)) {
SCPY(mncc->imsi, p_dialinginfo.id+5);
add_trace("dialing", "imsi", "%s", mncc->imsi);
} else {
SCPY(mncc->called.number, p_dialinginfo.id);
add_trace("dialing", "number", "%s", mncc->called.number);
}
/* sending user-user */
/* redirecting number */